Have TV Questions? Ask a TV Technician
Hi, my name is ***** ***** I will do my best to help you today. To make sure I don’t miss anything, please give me a minute to review your question.
OK, does power light on TV turn On solid or blink when switch On the TV?
OK, does screen glow/ show backlight inside when switch On the TV?
- What video devices/ sources (such as cable box DVD player etc) are connected to TV and does the problem occur on all video input sources?These info will help to troubleshoot the problem.Thank you.
I understand, black screen shows nothing.
Have you tried to unplug TV power cord form wall outlet for 10 minutes to reset, replug back in, switch On the TV.
Does screen glow and show any thing?
Please reply back with the result or we will try next step.
Sure, take your time.
OK, do you have sound from TV internal speakers?
OK, lets try next step. Please unplug TV power cord for 5 minutes.
While holding down the “VOL Down” and “INPUT” keys at a time, plug in the AC cord of the TV to turn on the power.
Does screen glow and letter K appears?
OK, try it again and give 5 minutes to leave power cord unplugged.
I'm trying to troubleshoot the issue.
Sorry for delayed reply, I was away from computer.
So screen is still dark, power light is On and solid, correct?
OK, I'm working on it, give me 5 minutes and meanwhile please reconfirm your TV model as there is a Zero missing in model number.
LC-70c660u you posted in opening question whereas it should be LC-70C6600U
Thanks, ***** ***** has builtin self diagnostic feature that can detect various issues related to power or backlight or ICs on main board except the main controller chip and present the error code by flashing the power light in specific sequences/ times.
Now power light stays On but no picture or sound in TV indicates that it is problem with main controlled chip of main board as we have tried all possible ways to get the error code to working the TV but nothing worked so it seems you would need to replace the main board of TV to resolve the problem.
If it was power board issue or t-con board problem then TV power light would have flashing. Please check with following board supplier to get identical replacement main board for this TV if you have plan to do it yourself..
If you are not comfortable working on it yourself then you may please use following link to get list of TV repair shops in area which will help to get repair quote...http://www.tvrepairpros.com/I'm sorry there is no easy or quick fix for this problem and it is definitely hardware failure that needs defective board replacement to resolve the issue. I trust my input will help you out to make decision about this TV repair or invest that money on new replacement TV. If you have any additional questions, feel free to ask. If you're satisfied, please rate me a 5-star at the top of your page. Thank you.
You're welcome, I wish I had an easy or quick fix for this problem. If you have any additional questions, feel free to ask.